B-anomalies in U(2) flavor symmetry
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We analyzed how to test flavor and helicity structures of the corresponding amplitudes in view of future data, motivated by the recent hints of lepton flavor universality violation observed in semileptonic B decays. The general assumption that non-standard effects are controlled by a U(2)5 flavor symmetry, minimally broken as in the Standard Model Yukawa sector, leads to stringent predictions on leptonic and semileptonic B decays. Future measurements will allow to prove or falsify this general hypothesis independently of its dynamical origin.
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2011 ◽
Vol 26
(06)
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pp. 377-385
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2003 ◽
Vol 18
(16)
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pp. 2769-2778
2006 ◽
Vol 21
(27)
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pp. 5652-5659
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